1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
//*************************************************************************
//*************************************************************************
//** **
//** (C)Copyright 1985-2011, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//*************************************************************************
//*************************************************************************
//*************************************************************************
// $Header: /Alaska/BIN/Chipset/Intel/SouthBridge/LynxPoint/Intel Pch SB Chipset/PchWrap/WdtApp/WdtAppPei/WdtAppPei.c 1 2/08/12 8:34a Yurenlai $
//
// $Revision: 1 $
//
// $Date: 2/08/12 8:34a $
//*************************************************************************
// Revision History
// ----------------
// $Log: /Alaska/BIN/Chipset/Intel/SouthBridge/LynxPoint/Intel Pch SB Chipset/PchWrap/WdtApp/WdtAppPei/WdtAppPei.c $
//
// 1 2/08/12 8:34a Yurenlai
// Intel Lynx Point/SB eChipset initially releases.
//
//*************************************************************************
#include <Efi.h>
#include <Pei.h>
#include <Token.h>
#include <AmiPeiLib.h>
#include <AmiCspLib.h>
#include "PchAccess.h"
#include "WdtAppVariable.h"
#include <Ppi\Wdt\Wdt.h>
#include <PPI\ReadOnlyVariable.h>
#ifdef EFI_DEBUG
#define WDT_TIMEOUT_BETWEEN_PEI_DXE 30
#else
#define WDT_TIMEOUT_BETWEEN_PEI_DXE 10
#endif
EFI_GUID gWdtPpiGuid = WDT_PPI_GUID;
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
//
// Procedure: WdtAppPeiEntryPoint
//
// Description: Turns on WDT during PEI phase according to requests made by
// OS overclocking application (through WDT status) and BIOS
// modules (through flash variable)
//
// Input: *FfsHeader - Pointer to Firmware File System file header.
// *PeiServices - General purpose services available to every PEIM.
//
// Output: EFI_SUCCESS if everything's OK
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
EFI_STATUS
WdtAppPeiEntryPoint (
IN EFI_FFS_FILE_HEADER *FfsHeader,
IN EFI_PEI_SERVICES **PeiServices
)
{
EFI_STATUS Status;
WDT_PPI *WdtPei;
EFI_GUID WdtPersistentData = WDT_PERSISTENT_DATA_GUID;
EFI_GUID gPeiReadOnlyVariablePpiGuid = EFI_PEI_READ_ONLY_VARIABLE_PPI_GUID;
WDT_PERSISTENT_DATA WdtStateData;
EFI_PEI_READ_ONLY_VARIABLE_PPI *ReadOnlyVariable;
UINTN VariableSize;
PEI_TRACE((-1, PeiServices, "(WdtApp) WdtAppPei Entry Point\n"));
Status = (*PeiServices)->LocatePpi (
PeiServices,
&gPeiReadOnlyVariablePpiGuid,
0, NULL,
&ReadOnlyVariable
);
ASSERT_PEI_ERROR (PeiServices, Status);
VariableSize = sizeof(WdtStateData);
Status = ReadOnlyVariable->GetVariable (
PeiServices,
WDT_PERSISTENT_DATA_C_NAME,
&WdtPersistentData,
NULL,
&VariableSize,
&WdtStateData
);
if (EFI_ERROR(Status)) {
WdtStateData.Enable = 0;
}
Status = (*PeiServices)->LocatePpi (
PeiServices,
&gWdtPpiGuid,
0,
NULL,
&WdtPei
);
ASSERT_PEI_ERROR (PeiServices, Status);
if (WdtPei->IsWdtRequired() == TRUE || WdtStateData.Enable == 1) {
WdtPei->ReloadAndStart(WDT_TIMEOUT_BETWEEN_PEI_DXE);
}
return EFI_SUCCESS;
}
//*************************************************************************
//*************************************************************************
//** **
//** (C)Copyright 1985-2011, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//*************************************************************************
//*************************************************************************
|
